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If f(x)=x^3+bx^3+cx+d and 0 lt b^2 lt c ...

If `f(x)=x^3+bx^3+cx+d and 0 lt b^2 lt c "then in" (-oo,oo)`

A

f(x) is strictly increasing function

B

f(x) has a local maxima

C

f(x) is strictly decreasing function

D

f(x) is bounded

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The correct Answer is:
A
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